import numpy as np

A = np.random.randint(0,101,size=(10,5))

mean_var = A.mean()
std_var = A.std()
Z = (A - mean_var) / std_var
res = Z[Z > 1.0]
print(f"A:\n{A}")
print(f"mean: {mean_var}, std: {std_var}")
print(f"Z:\n{Z}")
print(f'res:\n{res}')